MOUSE.BAS The MOUSE.BAS source-code file supports the Microsoft Mouse and other pointing devices that have a 100 percent Microsoft-Mouse-compatible driver. Although the procedures can be used by themselves, they were designed as an integral part of the User Interface toolbox. If you use the procedures in MOUSE.BAS, you must include GENERAL.BI and MOUSE.BI in your program so you will have the proper declarations and definitions. The header file MOUSE.BI includes procedure declarations for the MOUSE.BAS file. A description of the procedures that comprise MOUSE.BAS follows.